Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS station W4PSO - show graphs
Mic-E message: Off duty
Location: 39°02.50' N 77°31.50' W - locator FM19FB70AA - show map
2.6 km North bearing 351° from Broadlands, Loudoun County, Virginia, United States [?]
2.9 km Southwest bearing 207° from Belmont, Loudoun County, Virginia, United States
45.2 km West bearing 291° from Washington, D. C., Washington, D.C., United States
83.4 km West bearing 251° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2026-01-08 21:26:34 UTC (29d 18h30m ago)
2026-01-08 16:26:34 EST local time at Broadlands, United States [?]
Altitude: 118 m
Position ambiguous: Precision reduced at transmitter by 2 digits, position resolution approximately 1.9 km.
Course: 263°
Speed: 28 km/h
Device: Kenwood: TH-D75 (ht)
Last path: W4PSO>SYPRLZ via N4CV-2*,WIDE1*,WIDE2-1,qAR,WC4J (good)
Positions stored: 2
Other SSIDs: W4PSO-7 W4PSO-4 w4pso-i
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS